What causes stuttering?
D001921:Brain / Q000502:physiology; D001931:Brain Mapping; D003072:Cognition Disorders / Q000150:complications; D005006:Ethnicity / Q000706:statistics & numerical data; D007839:Functional Laterality; D006801:Humans; D015994:Incidence; D007859:Learning Disabilities / Q000150:complications; D015995:Prevalence; D013342:Stuttering / Q000453:epidemiology / Q000209:etiology* / Q000235:genetics / Q000503:physiopathology*; D014481:United States / Q000453:epidemiology